Australian Matthew Elliott proved the perfect stand-in with a superbly judged century to give Yorkshire their first win in a Lord's final since 1987.

The left-hander, recruited to replace Darren Lehmann for the final few weeks of the season, kept a cool head when they lost three wickets in an impressive new ball spell from Richard Johnson.

Aided and abetted by Michael Vaughan and Anthony McGrath, he reached three figures off 110 balls and saw the White Rose county home with two overs to spare.

It was fitting that Elliott should hit the winning boundary - his 13th in all - to finish on 128 not out, made at better than a run a ball.

Matthew Hoggard had earlier taken five for 65 to prevent Somerset registering a total beyond Yorkshire's reach after Peter Bowler (67) had helped give their innings a healthy start.

Early assault

Somerset gambled on the fitness of opener Marcus Trescothick, who had not played since breaking his left thumb in the quarter-final.

Yorkshire were happy to see the back of Trescothick

There were signs of occasional jarring, but it did not detract from the fluency of his strokeplay as he collected four fours and a superb six off Hoggard, whose third over cost 20.

He gained his revenge, however, when Trescothick failed to get over a drive after reaching 27 off 25 balls and Michael Vaughan plucked the ball out of the air one-handed at cover.

Bowler and Cox maintained a healthy momentum as Somerset moved past 100 in the 19th over but their hopes of a massive total faded after Cox was lbw to Anthony McGrath for 34.

Blakey brought back Hoggard for the 33rd over and it resulted in the immediate demise of Bowler.

The veteran opener hit six fours in his 89-ball knock, but in attempting to add another he only succeeded in nicking a comfortable catch to Blakey.

Superb spell

Keith Parsons, Man of the Match in last year's final against Leicestershire, was the key figure for Somerset in the closing overs and he again showed his value to the side with 41 off 46 balls as they squeezed past 250.

Johnson rocked Yorkshire with the new ball

Their total looked good enough as Johnson tore into Yorkshire with a highly impressive new ball burst, which completely overshadowed the efforts of partner Andy Caddick.

Craig White was caught behind for 12 and Johnson then bowled Chris Silverwood and Matthew Wood, the former having his off stump uprooted from the ground.

Once he was withdrawn from the attack after seven overs, only spin bowler Keith Dutch was able to cause Elliott any serious concern as he and Vaughan added 93 for the fourth wicket.

For a player in such superb form all summer, Vaughan's 31 without a single boundary was out of character.

It was, however, an ideal supporting innings, but he was eventually lbw to the persevering Steffan Jones with 100 still required.

There were no further alarms, however, as Anthony McGrath kept Elliott company with an unbeaten 46 as they put on 103 off 88 balls to see Yorkshire past their target.